Abbruch Button der GUI funktioniert nicht

#Region ### START Koda GUI section ### Form=ADaSi2 
$ADaSi2 = GUICreate("ADaSi v5.0", 509, 345, 192, 124) 
$Top1 = GUICtrlCreateLabel("Datensicherung wurde gestartet", 32, 32, 270, 26) 
GUICtrlSetFont(-1, 14, 800, 0, "Times New Roman") 
$Top2 = GUICtrlCreateLabel("Image Name: " & $UniqueDescription, 32, 80, 335, 23) 
GUICtrlSetFont(-1, 12, 800, 0, "Times New Roman") 
$Top3 = GUICtrlCreateLabel("HD Größe: " & $Notes & " GB", 32, 120, 335, 23) 
GUICtrlSetFont(-1, 12, 800, 0, "Times New Roman") 
$Top4 = GUICtrlCreateLabel("Kompression: " & $Compression, 32, 160, 335, 23) 
GUICtrlSetFont(-1, 12, 800, 0, "Times New Roman") 
$Button1 = GUICtrlCreateButton("Abbruch", 216, 256, 177, 49, $WS_GROUP) 
GUICtrlSetFont(-1, 14, 800, 0, "Times New Roman") 
GUICtrlSetBkColor(-1, 0xFF0000) 
GUISetState(@SW_SHOW) 
#EndRegion ### END Koda GUI section ### 
While 1 
$nMsg1 = GUIGetMsg() 
Switch $nMsg1 
Case $Button1 
$PID = ProcessExists ( "xx.exe" ) 
If $PID Then ProcessClose ( $PID ) 
FileDelete ( $ImageDestinationFolder & $UniqueDescription & ".**" ) 
Exit 
Case 0 
If $Verify = 0 Then 
WinSetOnTop ( "Creating Image", "", 1 ) 
While ControlFocus( "[CLASS:#32770]", "", "&Image Summary..." ) = 0 
Sleep ( 1000 ) 
WEnd 
Else 
WinWaitActive ( "Drive/Image Verify Results" ) 
Sleep ( 200 ) 
EndIf 
; xx zwangsbeenden 
$PID = ProcessExists ( "xx.exe" ) 
If $PID Then ProcessClose ( $PID ) 
; Directory Listing löschen oder mit der Log nach Dokumentation verschieben 
If $Compression > 5 Then 
FileMove ( $ImageDestinationFolder & $UniqueDescription & $Format & ".txt", $LW & $Az & "\Dokumentation\" & $UniqueDescription & "_Compressed.txt", 9 ) 
FileMove ( $ImageDestinationFolder & $UniqueDescription & $Format & ".csv", $LW & $Az & "\Dokumentation\" & $UniqueDescription & "_Compressed.csv", 9 ) 
ShellExecute ( $LW & $Az & "\Dokumentation\" & $UniqueDescription & "_Compressed.txt", "" , "" , "edit" ) 
Else 
FileDelete ( $ImageDestinationFolder & $UniqueDescription & $Format & ".csv" ) 
FileCopy ( $ImageDestinationFolder & $UniqueDescription & $Format & ".txt", $LW & $Az & "\Dokumentation\" & $UniqueDescription & "_Imaged.txt", 9 ) 
ShellExecute ( $LW & $Az & "\Dokumentation\" & $UniqueDescription & "_Imaged.txt", "" , "" , "edit" ) 
EndIf 
Exit 
EndSwitch 
WEnd 
Exit

;Abbruch mit Strg-Alt-a 
HotKeySet ( "^!a", "Abbruch" ) 


Func Abbruch() 
If MsgBox ( 52, "Abbruch?", "Die Tastenkombination für Abbruch wurde erkannt!" & @CRLF & "Wirklich beenden?" ) = 6 Then 
$PID = ProcessExists ( "xx.exe" ) 
If $PID Then ProcessClose ( $PID ) 
GUIDelete () 
EndIf 
If MsgBox ( 52, "Abbruch?", "Die Tastenkombination für Abbruch wurde erkannt!" & @CRLF & @CRLF & "Sollen die Sicherungsdateien gelöscht werden!!!" ) = 6 Then 
FileDelete ( $ImageDestinationFolder & $UniqueDescription & ".*" ) 
If IniRead ( $Falldaten, "Image_" & $ImageCount, "x91ImageName1", "" ) = $UniqueDescription Then 
IniDelete ( $Falldaten, "Image_" & $ImageCount ) 
$ImageCount = $ImageCount - 1 
IniWrite ( $Falldaten, "Allgemein" , "Imageanzahl", $ImageCount ) 
EndIf 
EndIf 
Exit 0 
EndFunc